2000
#148,244
National surname rank
Recorded bearers 102
First available Census row
Per 100,000 0.04
Very Rare Last name
Kroulik
A Czech surname derived from "krolík" meaning rabbit or small hare.
According to the 2020 US Census Bureau surname tables, roughly 139 Americans carry the last name Kroulik. That puts it at #141,309 in the national surname ranking, appearing at a frequency of 0.04 per 100,000 people (about 1 in 2,465,859 residents).
This page is the full Name Census profile for the Kroulik surname. You will find the Census Bureau frequency data, a multi-census history view, an ancestry and ethnicity breakdown based on self-reported demographics, the name's meaning and origin where available, and answers to the most common questions people ask about this surname.
Bearers in the US
139
1 in 2,465,859
Census rank
#141,309
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
121
very rare in the US
Popularity narrative
The Census Bureau recorded 121 bearers of the surname Kroulik in its 2020 decennial surname file. At a rate of 0.04 per 100,000 residents, it holds the 141309th position in the national surname ranking.
Among Census respondents with the surname Kroulik, the largest self-reported group is White at 82.6%. The next largest groups are Hispanic (8.3%) and American Indian/Alaska Native (4.1%).
Origin
Meaning and origin of Kroulik
The surname Kroulik is of Czech origin and dates back to the 13th century. It is derived from the Czech word "krolik," meaning rabbit. The name likely originated as a nickname for someone with a resemblance to a rabbit, or perhaps someone who was known for rabbit hunting or trading.
One of the earliest recorded instances of the Kroulik name can be found in the Bohemian town of Litomerice, where a record from 1287 mentions a certain Jakub Kroulik. In the 14th century, the name appears in the Bautzen Manuscript, an important historical document from the region of Upper Lusatia, now part of Germany.
During the 15th century, the Kroulik surname was found in various parts of Bohemia, including the towns of Plzen and Klatovy. A notable individual from this time was Jan Kroulik, a merchant from Prague who was involved in the trade of textiles and spices (born c. 1440, died 1507).
In the 16th century, the Kroulik name spread to other parts of the Czech lands, including Moravia and Silesia. One prominent figure was Vaclav Kroulik, a Protestant reformer and theologian from Brno who played a role in the Bohemian Reformation (1525-1589).
As the name continued to spread in the 17th and 18th centuries, it also began to appear in various spellings, such as Kroulik, Kroulek, and Kroulikova. An important historical figure from this period was Frantisek Kroulik, a Czech painter and engraver known for his religious works (1675-1743).
In the 19th century, the Kroulik surname was found in various parts of the Austro-Hungarian Empire, including Bohemia, Moravia, and parts of present-day Slovakia. One notable individual was Karel Kroulik, a Czech writer and journalist who was active in the Czech National Revival movement (1810-1876).
Throughout history, the Kroulik name has been associated with various professions, including merchants, craftsmen, artists, and religious figures. While the name is most common in the Czech Republic, it can also be found in other parts of Central Europe and among Czech diaspora communities around the world.
Demographics
Ancestry and ethnicity for Kroulik
Among Census respondents with the surname Kroulik, the largest self-reported group is White at 82.6%. The next largest groups are Hispanic (8.3%) and American Indian/Alaska Native (4.1%).
The bar chart below shows how Kroulik bearers described their own race and ethnicity on the 2020 Census form. The Census Bureau groups responses into six broad categories: White, Black or African American, Hispanic or Latino, Asian and Pacific Islander, American Indian and Alaska Native, and Two or More Races. When a category has too few respondents for a given surname, the Bureau suppresses the figure to protect individual privacy, which is why some names show fewer than six slices.
Percentages are shown for every Census year so the breakdown stays comparable over time. When the source file also includes raw headcounts, Name Census shows those alongside the percentages in the legend.
Keep in mind that these are self-reported numbers. A person's surname does not determine their race or ethnicity, and the distribution you see here reflects the specific population who happened to carry the Kroulik surname at the time of the 2020 Census, not any inherent property of the name itself.
- White82.6% · 100
- Hispanic or Latino8.3% · 10
- American Indian and Alaska Native4.1% · 5
- Asian and Pacific Islander2.5% · 3
- Two or more races1.7% · 2
- Black or African American0.8% · 1
Timeline
Historical Census data for Kroulik
Kroulik appears in 3 published Census surname files: 2000, 2010, 2020. The cards below show how the name's rank and bearer count changed across each release.
2010
#150,452
National surname rank
Recorded bearers 109
+7 bearers (+6.9%)
Per 100,000 0.04
Rank movement Down 2,208 places
2020
#141,309
National surname rank
Recorded bearers 121
+12 bearers (+11.0%)
Per 100,000 0.04
Rank movement Up 9,143 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #148,244 | 102 | 0.04 | First available Census row | First available Census row |
| 2010 | #150,452 | 109 | 0.04 | +7 bearers (+6.9%) | Down 2,208 places |
| 2020 | #141,309 | 121 | 0.04 | +12 bearers (+11.0%) | Up 9,143 places |
For 2020, the Census Bureau published race and Hispanic-origin columns as counts rather than percentages. Name Census converts those counts back into shares so the ancestry section stays comparable with the older surname files.
Year on year
2010 vs 2020 Census
How has the Kroulik surname changed between Census years? The chart shows bearer count side by side, and the table compares rank, count, and frequency.
Census year comparison
20102020
| Metric | 2010 | 2020 | Change |
|---|---|---|---|
| Rank | #150,452 | #141,309 | 6.1% |
| Count | 109 | 121 | 11.0% |
| Per 100K | 0.04 | 0.04 | 1.2% |
Between the 2010 and 2020 Census, the number of Kroulik bearers went from 109 to 121 (+11.0% change). The surname moved up 9,143 positions in the national ranking, going from #150,452 to #141,309.
FAQ
Kroulik surname: questions and answers
How many people in the U.S. have the surname Kroulik?
Name Census estimates that about 139 living Americans carry the surname Kroulik. Using the current population baseline, that works out to roughly 1 in 2,465,859 residents.
How common is Kroulik?
Kroulik ranks #141,309 in the 2020 Census surname tables and is classified on this site as "Very Rare." The Census recorded the name at a frequency of 0.04 per 100,000 residents, which is about 0 people out of every 100,000.
How many people with this surname were counted in the Census?
The raw 2020 Census file counted 121 people with the surname Kroulik. That is different from the site's living-bearer estimate (139), which projects the surname's present-day count by applying the Census frequency rate to the current U.S. population.
What does 0.04 per 100,000 actually mean?
It is the Census Bureau's normalized frequency measure. A rate of 0.04 per 100,000 means that if you picked a random group of 100,000 U.S. residents, you would expect about 0 of them to have the surname Kroulik.
Has Kroulik become more or less common over time?
Between 2010 and 2020, the surname Kroulik went from 109 recorded bearers to 121. That is an increase of 12 (+11.0%). In the national ranking it rose from #150,452 to #141,309.
What does the Census say about the background of Kroulik?
Among Census respondents with the surname Kroulik, the largest self-reported group is White at 82.6%. The next largest groups are Hispanic (8.3%) and American Indian/Alaska Native (4.1%). These figures come from the 2020 Census Bureau surname tables, based on how respondents described their own race and ethnicity.
Which group reports this surname most often?
White is the largest self-reported group for the surname Kroulik in the 2020 Census, accounting for 82.6% (100 people in the source table).
What is the full ancestry breakdown?
Kroulik appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (82.6%), Hispanic (8.3%), American Indian/Alaska Native (4.1%). For 2020, the source file also published raw headcounts for each group, which is why this page can show both percentages and counts in the ancestry section.
Is this page using the latest Census data?
Yes. This page is using the latest surname file currently loaded on Name Census, which is 2020. The historical section above also keeps any older Census surname entries we have for Kroulik (2000, 2010, 2020).
Does the Census include every surname?
No. The Census Bureau only publishes surnames that appeared at least 100 times in a given decennial Census. That means very rare surnames are excluded entirely, and a surname can appear in one Census release but disappear from a later one if it falls below the reporting threshold.
Why don't the ancestry percentages always add up to exactly 100%?
There are two main reasons: rounding and suppression. The Census Bureau rounds published values, and it may suppress very small cells to protect privacy. For 2020, the Bureau also published raw group counts rather than direct percentages, so Name Census converts those counts back into shares for comparability across census years.
What does Kroulik mean?
A Czech surname derived from "krolík" meaning rabbit or small hare. The fuller origin note on this page goes into more detail.
Where does the surname data come from?
All surname statistics on Name Census are drawn from the US Census Bureau's decennial surname frequency tables. These files list every surname that appeared 100 or more times in the 2020 Census, along with a count, a per-100,000 rate, and a self-reported demographic breakdown. You can read the full explanation on our methodology page.
How does Name Census estimate living bearers?
For surnames, Name Census does not age cohorts the way it does for first names. Instead, it takes the Census Bureau's published frequency for Kroulik (0.04 per 100,000) and applies that rate to the current U.S. resident population to estimate how many living Americans have the surname today.
How common is the surname Kroulik?
You can see how many Americans have the surname Kroulik on our sister site HowManyOfMe.org — same data roots, lighter UI.